試題詳解

25. Complete combustion of a benzene sample under limited oxygen yielded 135 g of total product. In contrast, when the same amount of benzene was completely burned in excess oxygen, 159 g of total product was collected. In the first experiment, what was the final molar ratio of CO to CO₂?
(A)CO:CO₂=3:4
(B)CO:CO₂=2:1
(C)CO:CO₂=3:2
(D)CO:CO₂ =1:1
(E)CO:CO₂=3:1